"FreeBSD is back to its incredible performance and now can take advantage of multi-core/CPUs systems very well... So well that some benchmarks on both Intel and AMD systems showed release 7.0 being faster than Linux 2.6 when running PostreSQL or MySQL. Federico Biancuzzi interviewed two dozen developers to discuss all the cool details of FreeBSD 7.0: networking and SMP performance, SCTP support, the new IPSEC stack, virtualization, monitoring frameworks, ports, storage limits and a new journaling facility, what changed in the accounting file format, jemalloc(), ULE, and more."

I can't personally speak to ESX, but VMware Server's release of vmware-tools doesn't work under FreeBSD 7. Rather, it doesn't *install* under FreeBSD 7-- the installer core-dumps before its able to make any progress.

You can, however, take a copy of vmware-tools that was installed on FreeBSD 6 and drop it on FreeBSD 7, and at that point the vmware-guestd program will run as normal if the 6.x compat libs are installed. I don't know about the vmxnet or vmmemctl modules though, as I don't use them on my VMware Server install.

One thing to note-- with the new release of VMware Server 2 beta, FreeBSD has been entirely removed from the list of supported guest OS's. I'm saddened by this as ~60% of the VMs on my VMWare Server 1.0.4 install are FreeBSD. I'm hoping FreeBSD support is added again as Server 2 beta nears release.